looks like rendering adblockers extensions obsolete with manifest-v3 was not enough so now they try to implement DRM into the browser giving the ability to any website to refuse traffic to you if you don’t run a complaint browser ( cough…firefox )
here is an article in hacker news since i’m sure they can explain this to you better than i.
and also some github docs
Is it possible to circumvent by running two environments and reporting only one?
It’s still a proposal. Nothing concrete yet. But from the looks of it, you can’t play such games since it’s cryptographically verified.